The heat of vaporization, ?Hvap, of a certain liquid at 25oC is 77.8. kJ/mol. If one mole of the liquid has an entropy of 247 J/K, what is the entropy of one mole of the vapor in equilibrium with the liquid at this temperature?
247 J/(mol . K)
261 J/(mol . K)
250. J/(mol . K)
508 J/(mol . K)
3.36 x 103 J/(mol . K)